frame proportions are a trend driven thing .. older was a short seat post , 2 inches of stand over was right.
top tube proportionally shorter.

now you see racers with a lot of seatpost and no stem height

Shorter frame with longer seat post= longer top tube is needed to keep things the same reach.

you may need a different bike, one which fits your current needs. maybe an upright position will be better

different style bars , and a comfortable posture.. and switching a few parts will not get you there..

Note there is a "fitness Bike" category which is a straight bar equpped and has narrow tired wheels if the bend over can be tolerated picking bits from those groupsets can be tapped into..

20 year-olds in bike shops rarely know history , even just of bikes .